Auxiliary component connector including microphone channel

ABSTRACT

A system connector for an electronic device such as a cellular phone is integrally molded with a mic cavity for receiving a device microphone. By incorporating the microphone into the system connector, overall device thickness can be reduced, providing a more efficient use of space than the previous use of separate connectors.

This is a continuation of application Ser. No. 08/717,803, filed Sep.24, 1996, U.S. Pat. No. 5,761,299, the contents of which are herebyincorporated by reference.

BACKGROUND OF THE INVENTION

The present invention relates generally to mobile communication devicesand, in particular, to a connector for receiving an auxiliary componentincluding an integrally formed mic cavity for receiving a devicemicrophone.

Size is a critical design criteria for electronic devices, such ascellular phones, with the emphasis on a configuration that is verysmall. However, most components such as the microphone have existingminimum dimensions that must be designed around. Subsequently, thesecomponent constraints often drive the mechanical package. New andinnovative solutions are needed to optimize the way components aresecured into cellular phones while reducing overall package size.

In current cellular phone applications, the microphone is typicallycontained in the front housing. Contact to the printed circuit board(PCB) can be made, for example, by way of a flex film that is solderedto the microphone or by way of an elastomeric film or connector. Ineither case, the microphone is positioned entirely above the PCB.

SUMMARY OF THE INVENTION

To reduce the overall phone thickness while providing space for a fliphinge mechanism or the like, it is desired to configure the microphoneto be disposed within the thickness of the PCB, rather than sit abovethe PCB. In support of this goal, the microphone is incorporated intothe existing system connector, which acts to secure the microphone withrespect to the PCB and housings and which provides a means to makeelectrical contact from the microphone to the PCB. With existingconnectors, gold plated contacts can be worn over time by slightmovements of the connector. Spring contacts provide the electricalconnection from the microphone to the PCB, although an elastomer couldperform the same function. In addition, many non-soldered connectorshave a tendency to wear the gold-plated contacts over time by slightmovements of the connector. Subsequently, screw boss frames have beenincorporated into the microphone/system connector to utilize the phonescrew bosses for optimum stability. An additional benefit to thisconfiguration is that a single connector provides a more efficient useof space than having to use two separate connectors (one for themicrophone and one for the system connector) or than having to use thephone housing to secure the microphone (adds additional tolerances andwall thickness).

In an exemplary embodiment, in accordance with the present inventionthere is provided a connector that is connectable to a PCB of anelectronic device for receiving an auxiliary component. The connectorincludes terminal windows shaped to receive a terminal of the auxiliarycomponent, contacts engageable with the PCB, which are disposed in theterminal windows, and a mic cavity shaped to receive a microphone andincluding contact members disposed therein. The contact members areadapted to connect the microphone to the PCB. At least one attachmentear on the connector may be adapted to be inserted between an uppercasing and a lower casing of the electronic device. The attachment earis preferably shaped to receive a connecting member such as the phonescrew boss that connects the upper and lower casings. The connector mayfurther include at least one latching window for receiving acorresponding latching member of the auxiliary component. The contactmembers may comprise contact springs or an elastomeric film.

In accordance with another exemplary aspect of the invention, there isprovided a cellular phone including an upper casing and a lower casingshaped to house phone components including the PCB, and the connectornoted above disposed between the upper and lower casings.

BRIEF DESCRIPTION OF THE DRAWINGS

These and other aspects and advantages of the present invention will bedescribed in detail with reference to the accompanying drawings, inwhich:

FIG. 1 is a perspective view of the connector according to the presentinvention;

FIG. 2 is a reverse perspective view of the connector illustrated inFIG. 1; and

FIG. 3 is a perspective view of a cellular phone incorporating theconnector according to the invention.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

Although the invention will be described in conjunction with a cellularphone, other applications of the subject matter will be apparent tothose of ordinary skill in the art, and the invention is not meant to beso limited.

The connector according to the present invention is preferably formed ofa moldable material such as a nylon, liquid crystalline polymer, oreqivalent in a single-step molding process. The molding process is wellknown, and the details of the process will therefore not be furtherdescribed.

Referring to FIGS. 1 and 2, the connector 10 according to the presentinvention includes an exterior face 12 having formed therein one or aplurality of terminal windows 14 and preferably at least a pair oflatching windows 16. In other configurations, more or fewer terminalwindows and latching windows are provided, and the invention is notmeant to be limited to the configuration that is illustrated in theFIGURES. A plurality of PCB contacts 18 are disposed in the terminalwindows 14. The contacts 18 are engageable with the cellular phone PCB20 (shown in phantom in FIG. 2).

At one end of the connector 10 there is provided a mic cavity 22 that isshaped to receive a microphone of the cellular phone. Contact members 24are disposed in the mic cavity 22 to connect the microphone to the PCB20. Corresponding PCB contacts 26 are provided on the interior side ofthe connector 10. Although spring type contacts 24 are shown in theFIGURES, it will be appreciated by those of ordinary skill in the artthat an elastomer could be used to perform the same function.

Two attachment ears 28 are formed at opposite ends of the connector 10.The attachment ears 28 include an opening 30 therethrough for receivingphone screw bosses (not shown) to improve stability. In priorconnectors, the connection between the connector 10 and the PCB 20 wasmaintained by the PCB contacts 18 frictionally engaging the PCB 20 andengagement features in the phone housings. Slight movements of theconnector during use over many cycles tended to wear the gold platedcontacts on the PCB resulting in less effective electrical connectionsand corrosion.

FIG. 3 illustrates a cellular phone 32 incorporating the connector 10according to the present invention. As shown in FIG. 3, the connector 10is sandwiched between an upper casing 34 and a lower casing 36 of thecellular phone. The upper casing 34 and lower casing 36 house thecomponents of the cellular phone including the PCB 20. The phone screwbosses 37 extend through the upper casing, through the apertures 30 inthe attachment ears 28 and into the lower casing 36. A microphone 38 issecured in the mic cavity 22 with a rubber grommet 40 or the like.

In operation, the terminal windows 14 receive terminals of an auxiliarycomponent such as a chargers, a headset, data plugs, etc. Typically, theauxiliary components include latching members that cooperate with thelatching windows 16 to secure the auxiliary components to the phone. Itis possible to provide keying for the auxiliary components, wherein, forexample, latches for one component are provided with a different widthor the like from another component, thereby preventing the one componentfrom being inserted into an improper location. That is, as shown in FIG.3, the latching windows 16 may have different widths and/or oppositelydisposed projections 42.

By forming the connector integral with a mic cavity for receiving thephone microphone, overall phone thickness is substantially reduced. Thatis, a cellular phone using a separate connector for the microphonetypically has a thickness of about 1.5 mm or more than a phoneincorporating the connector according to the present invention. Thesingle connector 10 according to the present invention thus provides amore efficient use of space than separate connectors (i.e., one for themicrophone and one for the system connector) or than to use the phonehousing to secure the microphone (which adds additional tolerances andwall thickness).

While the invention has been described in connection with what ispresently considered to be the most practical and preferred embodiments,it is to be understood that the invention is not to be limited to thedisclosed embodiments, but on the contrary, is intended to cover variousmodifications and equivalent arrangements included within the spirit andscope of the appended claims.

What is claimed is:
 1. A cellular phone comprising:an upper casing and alower casing shaped to house phone components including a PCB; and aconnector disposed between said upper and lower casings, said connectorcomprising:terminal windows shaped to receive terminals of an auxiliarycomponent, contacts coupled with the PCB, said contacts being disposedin said terminal windows, and a mic cavity receiving a microphone andincluding contact members disposed therein, said contact membersconnecting the microphone to the PCB, wherein said microphone is atleast partially disposed within a thickness of said PCB.
 2. A cellularphone according to claim 1, further comprising at least one attachmentear disposed between said upper casing and said lower casing, saidattachment ear receiving a connecting member that connects said upperand lower casings.
 3. A cellular phone according to claim 2, comprisingtwo attachment ears disposed at opposite ends of said connector.
 4. Acellular phone according to claim 1, further comprising at least onelatching window for receiving a corresponding latching member of theauxiliary component.
 5. A cellular phone according to claim 1, whereinsaid contact members comprise contact springs.
 6. A cellular phoneaccording to claim 1, wherein said contact members comprise anelastomeric film.